Optimization of Rail Profiles to Improve Vehicle Running Stability in Switch Panel of High-Speed Railway Turnouts

Table 2

Parameter values of vehicle model.

Parameters	Value	Unit
The mass of car body	42,400	kg
The rolling moment of inertia of car body	7.06e5	kg⋅m^2
The nodding moment of inertia of car body	2.27e6	kg⋅m^2
The yawing moment of inertia of car body	2.08e6	kg⋅m^2
The mass of bogie	3,100	kg
The rolling moment of inertia of bogie	5,045	kg⋅m^2
The nodding moment of inertia of bogie	2,806	kg⋅m^2
The yawing moment of inertia of bogie	2,247	kg⋅m^2
The mass of wheel set	1,850	kg
The rolling moment of inertia of wheel set	717	kg⋅m^2
The yawing moment of inertia of wheel set	717	kg⋅m^2
Half of longitudinal stiffness of secondary suspension	1.45e5	N/m
Half of lateral stiffness of secondary suspension	2.05e5	N/m
Half of vertical stiffness of secondary suspension	1.48e5	N/m
Half of longitudinal damping of secondary suspension	3.43e5	N⋅s/m
Half of lateral damping of secondary suspension	2.45e4	N⋅s/m
Half of vertical damping of secondary suspension	3.16e4	N⋅s/m
Half of longitudinal stiffness of primary suspension	2.80e7	N/m
Half of lateral stiffness of primary suspension	2.80e7	N/m
Half of vertical stiffness of primary suspension	2.80e7	N/m
Half of lateral damping of primary suspension	1.77e4	N⋅s/m
The vertical distance between mass centre of vehicle body and secondary suspension	1.100	m
The vertical distance between secondary suspension and mass centre of bogie	0.100	m
The vertical distance between mass centre of bogie and primary suspension	0.270	m
Half of lateral distance between primary suspensions	0.813	m
Half of lateral distance between secondary suspensions	0.978	m
Half of bogie fixed axles distance	1.350	m
Half of distance between mass centres of car bodies	8.750	m
Nominal rolling radius of wheel	0.430	m